He was a King of Colchis, son of the sun-god Helios and the Oceanid Perseis (a daughter of Oceanus), brother of Pasiphae and Circe, and father of Medea, Chalciope and Absyrtus. He took Phrixus in, after his escape from his step-mother’s schema, and treated him kindly, giving Phrixus his daughter Chalciope in marriage. In gratitude, Phrixus gave the king the golden fleece of the ram, which Aeëtes hung on a tree in his kingdom. Sometime later, Jason arrived to claim the fleece as his own. Aeëtes promised to give it to him only if he could perform certain tasks.